Improvement in journal-bearings



ELrzA D. MURFEY.

Improvement in Material. for Packing land Bearings.

N0. 121,84 Patented Dec..12,1871.

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ELIZA D. MURFEY, OF NEW YORK, N. Y.

IMPROVEMENT IN JOURNAL-BEARINGS.

Specification forming part of Letters Patent No. 121,804, dated December12, 1871.

` To all whom it may concern:

Be it known that I, ELIZA D. MUREEY, of New York, county :of New York,State of New York, have invented an Improvement in Journal-Bearings, ofwhich the following is a specification:

My improved bearing consists of a tube of paper or equivalent materialimpregnated or coated with a suitable lubricant, and constructed asfully described hereafter, so as to insure a continual supply oflubricant to the journal and the production of an efficient bearing at amoderate cost.

In the accompanying drawing, Figure 1 is a longitudinal section of myimproved bearing 5 Fig. 2, a longitudinal section of a modiiication;Fig. 3, a transverse section on the line l2, Fig. 2; Fig. 4, a diagramillustrating the manner of making the bearing.

A strip, fr, of paper or other suitable material, the thickness of whichdepends upon the character ofthe bearing to be made, is Wound spirallyupon a mandrel, A, as shown in Fig. 4:, care being taken that the layerin direct contact with the surface of the mandrel shall be so applied asto leave a spiral space, c, of uniform Width. Upon the rst layersubsequent layers are laid, either spirally or otherwise, with theiredges in contact, so as to form a continuous tube, B, with an interna]spiral groove, c, Fig. l. The paper or other material, either before orafter being brought to a tubular form, may be impregnated With anysuitable lubricating powderor composition, and

l gum-size or other material maybe applied to the strip to cause theadhesion ofthe layers; although in most instances the lubricant willalso act as a cement. The internal spiral groove forms a receptacle forthe retention of a portion of the lubricant, which keeps the journalwell lubricated and when the bearing is in the form ofa bolster, or is alining for a bolster, it is so arranged that the revolution of thespindle will tend to carry the lubricant up the groove, by which meansthe loss of much lubricant is avoided. The internal spiral groove may beformed by slightly overlapping the edges of the spiral strip in windingit on the mandrel, or the edges may lie close together, and the tube maybe perforated throughout its whole extent, forming recesses which areiilled with lubricant prior to the application of an external coveringof papers. (See Figs.2and 3.) The packing may be perforated after beingformed into a tube, or the strip .r may be perforated before beingapplied to the mandrel.

I claim- 1. A journal-bearing consisting of a strip of paper or itsequivalent Wound spirally and impregnated, as set forth.

2. A bearing of impregnated paper or its equivalent, having an internalgroove, c, for the purpose specied.

3. A bearing of paper or its equivalent, having internal depressions orrecesses, as and for the purpose set forth.

4. The combination, with the said perforated bearing, of an outercovering of paper or its equivalent.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

E. D. MURFEY.

HENRY MoMANUs. (87

